package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.spuvo.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Slf4j
@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {
    @Autowired
    private SpuInfoDescService spuInfoDescService;
    @Autowired
    private SpuImagesService imagesService;
    @Autowired
    private AttrService attrService;
    @Autowired
    private ProductAttrValueService attrValueService;
    @Autowired
    private SkuInfoService skuInfoService;
    @Autowired
    private SkuImagesService skuImagesService;
    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    private CouponFeignService couponFeignService;
    @Autowired
    private BrandService brandService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private WareFeignService wareFeignService;
    @Autowired
    private SearchFeignService searchFeignService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * todo  高级部分完善
     *
     *  @GlobalTransactional 适合这种非高并发场景
     * @param vo
     */
    //seata at模式解决分布式事物
    @GlobalTransactional
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1、保存spu基本信息  pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2、保存spu描述图片  pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        //将集合用逗号分开
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3、保存spu基图片集  pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(), images);

        //4、保存spu规格参数  pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();

        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            //查询属性名字
            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            //【1】快速展示   【0】不快速展示
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);

        //5、保存spu的积分信息 gulimall_sms-》sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("==>远程保存spu积分信息失败");
        }

        //5、保存spu对应的的所有sku信息

        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0) {
            skus.forEach(item -> {
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                //private String skuName;
                //private BigDecimal price;
                //private String skuTitle;
                //private String skuSubtitle;
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                //拷贝上面四个属性
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);

                //    5.1、sku的基本信息  pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);
                //保存成功有自增id生成
                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                })
                        //返回true就是需要，返回false就是剔除
                        .filter(skuImagesEntity -> !StringUtils.isEmpty(skuImagesEntity.getImgUrl()))
                        .collect(Collectors.toList());
                //    5.2、sku的图片信息  pms_sku_images
                skuImagesService.saveBatch(imagesEntities);
                // TODO: 2022/6/9  没有图片路径的无需保存

                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                //    5.3、sku的销售属性信息  pms_sku_sale_attr_value
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //    5.4、sku的优惠满减等信息  gulimall_sms-》sms_sku_ladder 、sms_sku_full_reduction、sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                //满减和折扣都要大于0才提交
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("==>远程保存sku优惠信息失败");
                    }
                }
            });
        }


    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);

    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        /**四个检索条件
         * status: 1
         * key:
         * brandId: 1
         * catelogId: 225
         */
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and(w -> w.eq("id", key).or().like("spu_name", key));
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)) {
            wrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }
        String catalogId = (String) params.get("catalog_id");
        if (!StringUtils.isEmpty(catalogId) && !"0".equalsIgnoreCase(catalogId)) {
            wrapper.eq("catalog_id", catalogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {

        //1、查出当前spuId对应的所有sku信息，品牌和名字
        List<SkuInfoEntity> skus = skuInfoService.getSkuBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        // TODO: 2022/6/18  4、查出当前sku所有可以用来被检索的规格属性  (规格属性，是按照spu来的，应该放在外面查询一次)
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> attr.getAttrId()).collect(Collectors.toList());
        //过滤出所有检索属性的id
        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        //从 baseAttrs中过滤出只是属于 searchAttrIds的属性的对象，并封装成esModel中attrs
        HashSet<Long> idSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> idSet.contains(item.getAttrId())).map(item -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        // TODO: 2022/6/18  1、发送远程调用，库存系统查询是否有库存 (如果每次调用都会去远程查一下，容易造成花费较多时间)
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkusHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        } catch (Exception e) {
            log.info("库存服务查询异常，原因==>{}", e);
        }

        //2、封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            //需要单独处理的属性
            //skuPrice skuImg
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            // hasStock hotScore
            //设置库存信息
            if (finalStockMap == null) {
                esModel.setHasStock(true);
            } else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            // TODO: 2022/6/18  2、热度评分，这里省略逻辑 给0
            esModel.setHotScore(0L);
            // TODO: 2022/6/18  3、查询品牌和分类的名字信息
            //    private String brandName;
            //    private String brandImg;
            //    private String catalogName;
            BrandEntity brand = brandService.getById(sku.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(sku.getCatalogId());
            esModel.setCatalogName(category.getName());

            //    public static class Attrs {
            //        private Long attrId;
            //        private String attrName;
            //        private String attrValue;
            //    }
            //设置检索属性
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        // TODO: 2022/6/18 5、将数据发送给es进行保存  gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0) {
            //远程调用成功
            // TODO: 2022/6/18  6、修改上架状态   pms_spu_info
            this.baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            //远程调用失败
            // TODO: 2022/6/18 7、重复调用？接口幂等性：重试机制
            /**
             * feign调用流程
             * 1、构造请求数据，将对象转为json
             *  RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2、发送请求执行（执行成功会解码响应数据）
             * executeAndDecode(template)
             * 3、执行请求会有重试机制
             * while(true){
             * try{
             *     executeAndDecode(template)
             * }catch{*
             *      try{
             *           retryer.continueOrPropagate(e);
             *      }catch{
             *            throw ex;
             *      }
             *  continue;
             * }
             */
        }


    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        SpuInfoEntity spuInfoEntity = getById(skuInfoEntity.getSpuId());
        return spuInfoEntity;
    }

}